The geochemistry of a lenticular manganese-ore deposit (Um Bogma, Southern Sinai)

✍ Scribed by M. Magaritz; I. B. Brenner

• Book ID: 104661363
• Publisher: Springer
• Year: 1979
• Tongue: English
• Weight: 832 KB
• Volume: 14
• Category: Article
• ISSN: 0026-4598
• DOI: 10.1007/bf00201863

✦ Synopsis

Trace element distributions and interrelationships in the lenticular Mn ore bodies of Urn Bogrna, Sinai, are utilized to establish physicochernical conditions of formation and diagenesis.

The deposits are considered to be shallow marine in origin. Mineralogical and chemical data suggest that these ores were subjected to various diagenetic processes which resulted in the separation of manganese from iron, several ore types being recognized: a) a mixture of Fe and Mn considered to be the original one (mixed ore); b) Mn-rich types; c) Fe-rich types. In this investigation, chemical and mineralogical data and interrelationships are employed to evaluate environmental conditions prevailing during diagenesis. M. Magaritz and I. B. Brenner~ Lentieular Manganese-Ore Deposit Mediterranean Sea Si0 0~ Eliot Abu ze~im~O]ll~ UM BOGMA '~z~_ REGION Kaolinite ~J 0 ~ z i~o P~k-,,~:~, mar~ in places, shales, ~ ~ silt and ferruoinous manganese ore ~-ioo Brown red sandstone ~'" Variegated sandstone ~:~i~2~ Silty shales interbed~ed with dolomite u ~' ~" ~i Variegated sandstOne i i '~ ~ ' ~g , ~ ' ~g '~ ~ '~ g ' ~g